1144967287991 has 8 divisors (see below), whose sum is σ = 1147672202400. Its totient is φ = 1142263824768.

The previous prime is 1144967287967. The next prime is 1144967287999. The reversal of 1144967287991 is 1997827694411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1144967287991 - 2⁶ = 1144967287927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144967287999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1225235 + ... + 1947083.

It is an arithmetic number, because the mean of its divisors is an integer number (143459025300).

Almost surely, 2^{1144967287991} is an apocalyptic number.

1144967287991 is a deficient number, since it is larger than the sum of its proper divisors (2704914409).

1144967287991 is an equidigital number, since it uses as much as digits as its factorization.

1144967287991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725593.

The product of its digits is 54867456, while the sum is 68.

The spelling of 1144967287991 in words is "one trillion, one hundred forty-four billion, nine hundred sixty-seven million, two hundred eighty-seven thousand, nine hundred ninety-one".